[Amps] Henry 3K-A

[R.Measures]

>Funny you mention the 3K-A, Rich.  I may be picking one up this weekend.  
>Having found very little
>on the 'net using Google, I wonder if anyone here has any suggestions 
>(mods, upgrades, etc). 
>Also, what is the supply's ratings (Plate V, etc).
>
*•  2500W CCS.  Easily enough steam for a pair of 8877s.  Useful mods 
are:   glitch-R in HV Positive circuit, high-speed switching, glitch 
diodes across meter movements, lower VHF-Rp suppressors, replace narginal 
blower with a Kooltronics high-pressure blower, and add a small DC fan 
blowing air across filament pins. //   an electric screwdriver is 
recommended.  

cheerz, Joe

>--- "R.Measures" <r at somis.org> wrote:
>> 
>> **  Very few Ham amplifiers have a HV supply that will not sag under a Aÿ
>> / dead-carrier - thereby producing a mistune.  The Henry 3K-A is one of
>> the few that has such a supply, however, it's 3-500Z cooling system is
>> not adequate for doing so (solder in pins 1 and 5 melts).  //  note - One
>> way to reduce average current during tuneup is to use a tuning pulser.
>> >
>> >
>
>
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